10G Ethernet driver supporting Apple® OS X® and Microsoft® Windows® environments for the AKiTiO Thunder2 10G Network Adapter, the Thunder3 10G Network Adapter and the 5-Speed 10G/NBASE-T™ PCIe Network Card.

Supported Operating Systems:
Mac OS 10.10.3 and above, Windows 7 (32-bit & 64-bit), Windows 8.1 (32-bit & 64-bit), Windows 10 (64-bit)

Supported Products:

FileDescriptionFile sizeLast modified
Download this file (tn40xx_10.10-1.48.pkg)Mac Driver v1.48Mac driver for Mac OS 10.10.x344 kBJun 13, 2017
Download this file (tn40xx_10.11-1.50.pkg)Mac Driver v1.50Mac driver for Mac OS 10.11.x340 kBJun 13, 2017
Download this file (tn40xx_10.12-1.51.pkg)Mac Driver v1.51Mac driver for macOS 10.12.x544 kBJun 13, 2017
Download this file (tn40xx_10.12-1.52.2.pkg)Mac Driver v1.52Mac driver for macOS 10.13.x544 kBNov 07, 2017
Download this file (Tehuti_156WHQL.zip)PC DriverMicrosoft Windows driver v1.564305 kBNov 07, 2017


Mac OS X Driver Installation

Mac OS X

  1. Download the driver for Mac OS X.
  2. Locate the downloaded file in the Finder, control-click and select Open.
    Tehuti Mac Driver Installation 1
  3. Click Open to confirm.
    Tehuti Mac Driver Installation 1b
  4. Click Continue and follow the installation wizard.
    Tehuti Mac Driver Installation 2
  5. Click Install to install the driver.
    Tehuti Mac Driver Installation 3
  6. Enter the username and password for your computer and click Install Software.
    Tehuti Mac Driver Installation 4
  7. Click Close to complete the installation
    Tehuti Mac Driver Installation 5
  8. Reboot your computer.
  9. Connect the network adapter to your computer.
  10. Go to Preferences > Network and your new Ethernet adapter should now be available.
    Tehuti Mac Driver Installation 6

Important information for macOS High Sierra (macOS 10.13)

  1. If you are using macOS 10.13 and you have followed the instructions above to install the driver but your Thunderbolt Ethernet adapter does not show up on the list of network devices, please check the system report on your Mac to see if the driver has been installed succesfully. If it says No, the driver might be blocked due to security reasons.
    system report
  2. You might also get a warning prompt at this time saying that the system extension is blocked.
    system extension blocked
  3. Go to Preferences > Security & Privacy.
  4. If the settings are currently locked, click on the lock first to make the following changes. Set the security settings to allow apps downloaded from "App Store and identified developers". If necessary, disconnect and re-connect the network adapter and then click Allow to unblock the driver and allow it to load.
  5. The driver should now load correctly and from this point forward, the network adapter will be recognized automatically.
    driver installed

Missing Thunderbolt Ethernet Adapter

  1. If you have followed all the instructions above to install the driver but your Thunderbolt Ethernet adapter does not show up automatically on the list of network devices, please add it manually.
  2. Go to Preferences > Network. Click on the little plus sign in the bottom left corner and select the new adapter (e.g. Thunderbolt Ethernet Slot 1).
    Tehuti Mac Driver Installation 7
  3. Name the new network device and click Create to add it to the list.
    Tehuti Mac Driver Installation 8

Uninstalling the network driver

  1. Locate the driver at /Library/Extensions/tn40xx.kext.
  2. Drag and drop the driver into the trash.
  3. Restart your computer.